Alert archive / Nevada / Flash Flood Warnings in 2003

Flash Flood Warning 5, NWS Elko, NV

July 31, 2003White Pine County, Nevada

NWS Elko, NV issued this flash flood warning at Jul 31, 2003, 5:31 PM PDT for White Pine County, Nevada. It was in force for 89 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 31, 2003, 5:31 PM PDT (00:31 UTC)
Expired
Jul 31, 2003, 7:00 PM PDT
In force
89 min
Issued by
NWS Elko, NV
Area
Counties, with a storm outline in the text

County White Pine County, NV

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Elko, NV (KLKN), launched 00:00Z, 0.5 hours before the alert went out and 212 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Elko, NV at 00:00Z on 2003-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 81 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Elko, NV at 00:00Z on 2003-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
81 J/kg
Mixed-layer CIN
-62 J/kg
Mixed-layer LCL
3778 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
39 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS55 KLKN 010143 CCA
FFWLKN
NVC033-010200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ELKO NV
531 PM PDT THU JUL 31 2003

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN WHITE PINE COUNTY IN NEVADA
  THIS INCLUDES THE CITY OF BAKER

* UNTIL 700 PM PDT

* AT 524 PM PDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY 
RAIN OVER BAKER...MOVING LITTLE.

WITH THE RAIN EARLIER THIS AFTERNOON OVER GREAT BASIN NATIONAL 
PARK...EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF 
CREEKS AND STREAMS...ROADS AND ROADSIDE CULVERTS. ANYONE IN THE TOWN 
OF BAKER OR TRAVELING ALONG U.S. HIGHWAY 50 AND STATE HIGHWAY 487 
SHOULD STAY ALERT FOR WATER AND/OR MUD RUNNING ACROSS THE ROAD.

DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN 
DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT 
IMMEDIATELY AND SEEK HIGHER GROUND.

TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE.

LAT...LON 3883 11424 3882 11406 3917 11405 3915 11422

$$

GC

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Elko, NV wrote its last area forecast discussion before this flash flood warning went out at Jul 31, 2:00 PM PDT, 3 hours 31 minutes earlier.

Area forecast discussion, Jul 31, 2:00 PM PDT, 3 hours 31 minutes before
NORTHERN GREAT BASIN FORECAST DISCUSSION
200 PM PDT THU JUL 31 2003

.SYNOPSIS...THE COMBINATION OF A LOW PRESSURE SYSTEM ALONG THE
PACIFIC COAST AND HIGH PRESSURE OVER THE FOUR CORNERS AREA WILL
ALLOW MOISTURE TO SPREAD ACROSS EAST CENTRAL AND NORTHEAST NEVADA
THROUGH THIS WEEKEND. EARLY NEXT WEEK INCREASING SOUTHWEST FLOW
ALOFT WILL BRING DRIER CONDITIONS TO NORTHEAST AND EAST CENTRAL
NEVADA.

.SHORT TERM...THUNDERSTORM ACTIVITY INCREASING THIS AFTERNOON WITH
GOES PW OF 1.4 INCHES OVER SRN NV AND .95 INCHES OVER EAST CENTRAL
NV. WOULD LIKE TO SEE WIDESPREAD ACTIVITY TO INCREASE CONFIDENCE
IN CURRENT WATCH. BUT THERE REMAINS PLENTY OF TIME TO DEVELOP...SO
WILL CONTINUE FLASH FLOOD WATCH. FRI SHOULD SEE CONVECTION SPREAD
FURTHER NORTH AS RIDGE AXIS SHIFTS E AND SLY FLOW ALLOWS S/WV TROF
TO MIGRATE ACROSS CWA. PAC TROF MOVES INLAND ON SAT WITH MAIN
INSTABILITY AREA SHIFTING OVER NE NV. ADDED SUPPORT FROM RRQ OF SLY
JET WILL HELP MAINTAIN CONVECTION THRU SAT EVE.

.EXTENDED...ON SUN AVN INDICATES AMS DRIES AND BECOMES LESS
UNSTABLE...ALTHO AVN LI STILL NEAR ZERO OVER CWA. GENERAL DRYING
TREND INDICATED OVER REMAINDER OF WEEK IN SW FLOW ALOFT. AM CONCERNED
ABOUT ERN PAC TROF ATTEMPTING TO ROTATE INLAND ON THU. UNTIL WE HAVE
BETTER HANDLE ON THIS SYS WILL KEEP DRY FCST FOR WED AND THU.

.EKO...NVZ035-037 FLASH FLOOD WATCH CONTINUES THROUGH 1030 PM PDT.

EYSSAUTIER
Hazardous weather outlook, Jul 31, 1:30 PM PDT, 4 hours 1 minute before
NVZ030>037-011400-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ELKO NV
130 PM PDT THU JUL 31 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND EAST CENTRAL
NEVADA

.DAY ONE...

FLASH FLOOD WATCH IN EFFECT FORECAST CENTRAL NEVADA THIS
AFTERNOON AND EVENING. THE AFFECTED COUNTIES ARE WHITE PINE...
SOUTHERN LANDER AND SOUTHERN EUREKA. SHOWERS AND THUNDERSTORMS
WILL DEVELOP OVER EAST CENTRAL NEVADA THIS AFTERNOON WITH HEAVY
RAIN SHOWERS POSSIBLE LATE THIS AFTERNOON AND EVENING. SEE WGUS65
KLKN RNOFFALKN FOR DETAILS.

.DAYS TWO THROUGH SEVEN...

SCATTERED AFTERNOON AND EVENING THUNDERSTORMS WILL CONTINUE ACROSS
NORTHERN AND EAST CENTRAL NEVADA FRIDAY AND SATURDAY...DIMINISHING
EARLY NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

EYSSAUTIER

The office that day

Everything else NWS Elko, NV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 31, 6:30 PM PDTFlash Flood WarningLKNEureka90 min
Jul 31, 7:02 PM PDTFlash Flood WarningLKNWhite Pine88 min
Jul 31, 8:00 PM PDTFlash Flood WarningLKNEureka, White Pine3 hr

Nearby

Flash Flood Warnings in Nevada, 2003Every flash flood warning in 2003

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.